BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1997-01-01' and l_shipdate < cast(date '1997-01-01' + interval '1 year' as date) and l_discount between 0.05 - 0.01 and 0.05 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1483550.30..1483550.31 rows=1 width=8) (actual time=26690.234..26690.234 rows=1 loops=1) Buffers: shared hit=323256 read=718535 written=1125 -> Bitmap Heap Scan on lineitem (cost=191963.29..1479543.56 rows=801348 width=8) (actual time=8347.100..26391.610 rows=796632 loops=1) Recheck Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Filter: ((l_discount >= 0.04::double precision) AND (l_discount <= 0.06::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8316756 Buffers: shared hit=323256 read=718535 written=1125 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191762.95 rows=9211612 width=0) (actual time=7745.124..7745.124 rows=9230576 loops=1) Index Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Buffers: shared read=24874 Total runtime: 26698.469 ms (11 rows) COMMIT; COMMIT